toyota Fj40 Big Block V8 - belly Pan - Photo 9370617

We like this: a completely flat belly pan that extends forward to protect the tranny. No matter how beefy your drivetrain is, if you stuff a chunk of granite or other unyielding obstacle into the T-case, there's a good chance you'll be heading back to camp on foot, or on the end of a towstrap. Hidden behind a 0.375-inch skidplate is a Centerforce clutch, a GM SM465 granny-Low four-speed, and a 3.8:1 Atlas II transfer case.